D3 Examples

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<!DOCTYPE html>
<meta charset="utf-8">
<style type="text/css">
​
svg {
  font-family: "Helvetica Neue", Helvetica;
}
​
.line {
  fill: none;
  stroke: #000;
  stroke-width: 2px;
}
​
</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>
​
var m = [20, 20, 30, 20],
    w = 960 - m[1] - m[3],
    h = 500 - m[0] - m[2];
​
var x,
    y,
    duration = 1500,
    delay = 500;
​
var color = d3.scale.category10();
​
var svg = d3.select("body").append("svg")
    .attr("width", w + m[1] + m[3])
    .attr("height", h + m[0] + m[2])
  .append("g")
    .attr("transform", "translate(" + m[3] + "," + m[0] + ")");
​
var stocks,
    symbols;
​
// A line generator, for the dark stroke.
var line = d3.svg.line()
    .interpolate("basis")
    .x(function(d) { return x(d.date); })
    .y(function(d) { return y(d.price); });
​
// A line generator, for the dark stroke.
var axis = d3.svg.line()
    .interpolate("basis")
    .x(function(d) { return x(d.date); })
    .y(h);
​
// A area generator, for the dark stroke.
var area = d3.svg.area()
    .interpolate("basis")
    .x(function(d) { return x(d.date); })
    .y1(function(d) { return y(d.price); });
​
d3.csv("dataset.csv", function(data) {
  var parse = d3.time.format("%b %Y").parse;
​
  // Nest stock values by symbol.
  symbols = d3.nest()
      .key(function(d) { return d.symbol; })
      .entries(stocks = data);
​
  // Parse dates and numbers. We assume values are sorted by date.
  // Also compute the maximum price per symbol, needed for the y-domain.
  symbols.forEach(function(s) {
    s.values.forEach(function(d) { d.date = parse(d.date); d.price = +d.price; });
    s.maxPrice = d3.max(s.values, function(d) { return d.price; });
    s.sumPrice = d3.sum(s.values, function(d) { return d.price; });
  });
​
  // Sort by maximum price, descending.
  symbols.sort(function(a, b) { return b.maxPrice - a.maxPrice; });
​
  var g = svg.selectAll("g")
      .data(symbols)
    .enter().append("g")
      .attr("class", "symbol");
​
  setTimeout(lines, duration);
});
​
function lines() {
  x = d3.time.scale().range([0, w - 60]);
  y = d3.scale.linear().range([h / 4 - 20, 0]);
​
  // Compute the minimum and maximum date across symbols.
  x.domain([
    d3.min(symbols, function(d) { return d.values[0].date; }),
    d3.max(symbols, function(d) { return d.values[d.values.length - 1].date; })
  ]);
​
  var g = svg.selectAll(".symbol")
      .attr("transform", function(d, i) { return "translate(0," + (i * h / 4 + 10) + ")"; });
​
  g.each(function(d) {
    var e = d3.select(this);
​
    e.append("path")
        .attr("class", "line");
​
    e.append("circle")
        .attr("r", 5)
        .style("fill", function(d) { return color(d.key); })
        .style("stroke", "#000")
        .style("stroke-width", "2px");
​
    e.append("text")
        .attr("x", 12)
        .attr("dy", ".31em")
        .text(d.key);
  });
​
  function draw(k) {
    g.each(function(d) {
      var e = d3.select(this);
      y.domain([0, d.maxPrice]);
​
      e.select("path")
          .attr("d", function(d) { return line(d.values.slice(0, k + 1)); });
​
      e.selectAll("circle, text")
          .data(function(d) { return [d.values[k], d.values[k]]; })
          .attr("transform", function(d) { return "translate(" + x(d.date) + "," + y(d.price) + ")"; });
    });
  }
​
  var k = 1, n = symbols[0].values.length;
  d3.timer(function() {
    draw(k);
    if ((k += 2) >= n - 1) {
      draw(n - 1);
      setTimeout(horizons, 500);
      return true;
    }
  });
}
​
function horizons() {
  svg.insert("defs", ".symbol")
    .append("clipPath")
      .attr("id", "clip")
    .append("rect")
      .attr("width", w)
      .attr("height", h / 4 - 20);
​
  var color = d3.scale.ordinal()
      .range(["#c6dbef", "#9ecae1", "#6baed6"]);
​
  var g = svg.selectAll(".symbol")
      .attr("clip-path", "url(#clip)");
​
  area
      .y0(h / 4 - 20);
​
  g.select("circle").transition()
      .duration(duration)
      .attr("transform", function(d) { return "translate(" + (w - 60) + "," + (-h / 4) + ")"; })
      .remove();
​
  g.select("text").transition()
      .duration(duration)
      .attr("transform", function(d) { return "translate(" + (w - 60) + "," + (h / 4 - 20) + ")"; })
      .attr("dy", "0em");
​
  g.each(function(d) {
    y.domain([0, d.maxPrice]);
​
    d3.select(this).selectAll(".area")
        .data(d3.range(3))
      .enter().insert("path", ".line")
        .attr("class", "area")
        .attr("transform", function(d) { return "translate(0," + (d * (h / 4 - 20)) + ")"; })
        .attr("d", area(d.values))
        .style("fill", function(d, i) { return color(i); })
        .style("fill-opacity", 1e-6);
​
    y.domain([0, d.maxPrice / 3]);
​
    d3.select(this).selectAll(".line").transition()
        .duration(duration)
        .attr("d", line(d.values))
        .style("stroke-opacity", 1e-6);
​
    d3.select(this).selectAll(".area").transition()
        .duration(duration)
        .style("fill-opacity", 1)
        .attr("d", area(d.values))
        .each("end", function() { d3.select(this).style("fill-opacity", null); });
  });
​
  setTimeout(areas, duration + delay);
}
​
function areas() {
  var g = svg.selectAll(".symbol");
​
  axis
      .y(h / 4 - 21);
​
  g.select(".line")
      .attr("d", function(d) { return axis(d.values); });
​
  g.each(function(d) {
    y.domain([0, d.maxPrice]);
​
    d3.select(this).select(".line").transition()
        .duration(duration)
        .style("stroke-opacity", 1)
        .each("end", function() { d3.select(this).style("stroke-opacity", null); });
​
    d3.select(this).selectAll(".area")
        .filter(function(d, i) { return i; })
      .transition()
        .duration(duration)
        .style("fill-opacity", 1e-6)
        .attr("d", area(d.values))
        .remove();
​
    d3.select(this).selectAll(".area")
        .filter(function(d, i) { return !i; })
      .transition()
        .duration(duration)
        .style("fill", color(d.key))
        .attr("d", area(d.values));
  });
​
  svg.select("defs").transition()
      .duration(duration)
      .remove();
​
  g.transition()
      .duration(duration)
      .each("end", function() { d3.select(this).attr("clip-path", null); });
​
  setTimeout(stackedArea, duration + delay);
}
​
function stackedArea() {
  var stack = d3.layout.stack()
      .values(function(d) { return d.values; })
      .x(function(d) { return d.date; })
      .y(function(d) { return d.price; })
      .out(function(d, y0, y) { d.price0 = y0; })
      .order("reverse");
​
  stack(symbols);
​
  y
      .domain([0, d3.max(symbols[0].values.map(function(d) { return d.price + d.price0; }))])
      .range([h, 0]);
​
  line
      .y(function(d) { return y(d.price0); });
​
  area
      .y0(function(d) { return y(d.price0); })
      .y1(function(d) { return y(d.price0 + d.price); });
​
  var t = svg.selectAll(".symbol").transition()
      .duration(duration)
      .attr("transform", "translate(0,0)")
      .each("end", function() { d3.select(this).attr("transform", null); });
​
  t.select("path.area")
      .attr("d", function(d) { return area(d.values); });
​
  t.select("path.line")
      .style("stroke-opacity", function(d, i) { return i < 3 ? 1e-6 : 1; })
      .attr("d", function(d) { return line(d.values); });
​
  t.select("text")
      .attr("transform", function(d) { d = d.values[d.values.length - 1]; return "translate(" + (w - 60) + "," + y(d.price / 2 + d.price0) + ")"; });
​
 
}
​
​
​
​
​
​
function donutExplode() {
  var r0a = h / 2 - x.rangeBand() / 2,
      r1a = h / 2,
      r0b = 2 * h - x.rangeBand() / 2,
      r1b = 2 * h,
      arc = d3.svg.arc();
​
  svg.selectAll(".symbol path")
      .each(transitionExplode);
​
  function transitionExplode(d, i) {
    d.innerRadius = r0a;
    d.outerRadius = r1a;
    d3.select(this).transition()
        .duration(duration / 2)
        .tween("arc", tweenArc({
          innerRadius: r0b,
          outerRadius: r1b
        }));
  }
​
  function tweenArc(b) {
    return function(a) {
      var path = d3.select(this),
          text = d3.select(this.nextSibling),
          i = d3.interpolate(a, b);
      for (var key in b) a[key] = b[key]; // update data
      return function(t) {
        var a = i(t);
        path.attr("d", arc(a));
        text.attr("transform", "translate(" + arc.centroid(a) + ")translate(" + w / 2 + "," + h / 2 +")rotate(" + ((a.startAngle + a.endAngle) / 2 + 3 * Math.PI / 2) * 180 / Math.PI + ")");
      };
    }
  }
​
  setTimeout(function() {
    svg.selectAll("*").remove();
    svg.selectAll("g").data(symbols).enter().append("g").attr("class", "symbol");
    lines();
  }, duration);
}
​
</script>
    